Resistance of gastrointestinal tissues to digestion by gastric juice.
D000818:Animals; D002403:Cathepsins; D005750:Gastric Juice; D005753:Gastric Mucosa; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008055:Lipids; D009093:Mucus; D010434:Pepsin A; D051381:Rats
D008055:Lipids; D002403:Cathepsins; D010434:Pepsin A